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Thermodynamic modeling for the removal of Cs+, Sr2+, Ca2+and Mg2+ions from aqueous waste solutions using zeolite A</p> </p>

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Summary

The batch removal ofCs+, Sr2+, Ca2+and Mg2+ions from aqueous solutions using synthetic zeolite A was investigated. The influence of the initial ion concentration, pH and temperature was studied. The obtained isotherm data have been correlated with Langumir, Freundlich, and Dubinin-Radushkevich(D-R) isotherm models. The effect of the temperature on the equilibrium distribution values has been utilized to evaluate the standard thermodynamic parameters such as free energy (DG), enthalpy (DH) and entropy (DS). Based on the D-R isotherm expression, the maximum ion-exchange capacity and the mean free energy of each studied ion has been determined. The selectivity sequence, deduced from the equilibrium isotherm data is: Sr2+>Ca2+>Mg2+>Cs+>Na+.</p> </p>

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Authors and Affiliations

  1. Hot Laboratory Center, Atomic Energy Authority, P.O. Box 13759, Cairo, Egypt

    K. M. Abd El-Rahman

  2. Hot Laboratory Center, Atomic Energy Authority, P.O. Box 13759, Cairo, Egypt

    A. M. El-Kamash

  3. Hot Laboratory Center, Atomic Energy Authority, P.O. Box 13759, Cairo, Egypt

    M. R. El-Sourougy

  4. Chemical Engineering Department, Faculty of Engineering, Cairo University, Cairo, Egypt

    N. M. Abdel-Moniem

Authors
  1. K. M. Abd El-Rahman
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  2. A. M. El-Kamash
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  3. M. R. El-Sourougy
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  4. N. M. Abdel-Moniem
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El-Rahman, K., El-Kamash, A., El-Sourougy, M. et al. Thermodynamic modeling for the removal of Cs+, Sr2+, Ca2+and Mg2+ions from aqueous waste solutions using zeolite A</p> </p> . J Radioanal Nucl Chem 268, 221–230 (2006). https://doi.org/10.1007/s10967-006-0157-y

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  • DOI: https://doi.org/10.1007/s10967-006-0157-y

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